What is the working principle of windshield wipers?
2 Answers
The power of the windshield wiper comes from the motor, which is the core of the entire wiper system. It uses a DC permanent magnet motor, usually integrated with the reduction mechanism. The function of the reduction mechanism is generally to reduce speed and increase torque. Its output shaft drives the four-bar linkage mechanism, which converts continuous rotational motion into left-right motion. Relevant information about windshield wipers is as follows: 1. Introduction: The wiper, also known as the windshield wiper or windscreen wiper, is a device used to wipe off raindrops and dust attached to the vehicle's windshield, improving the driver's visibility and enhancing driving safety. 2. Usage: On rainy days, when raindrops fall on the car window glass, the view ahead is quickly obstructed, and vehicles, pedestrians, and scenery become blurred. At this time, turning on the wiper will restore a clear view ahead.
As a seasoned driver with years of experience, I've gained quite some insight into how windshield wipers work. Essentially, when you press the switch from the driver's seat, electric current flows from the car battery to activate the motor. The motor, through a linkage mechanism, converts rotational motion into the back-and-forth swinging of the wiper arms, much like a pendulum wiping the windshield. The rubber blades adhere to the glass, sweeping away rainwater to maintain clear visibility. Over the years, I've noticed that if the linkage rusts or gets stuck, the wipers may judder or malfunction; when the blades age, they tend to squeak or leave streaks. It's advisable to check blade wear every six months and wipe the glass with a damp cloth to prevent dust buildup. Sometimes, a blown fuse in the car can affect the circuit—if the wipers suddenly stop, checking the fuse box is a good first step. Regular maintenance ensures the system's longevity, which is especially crucial during heavy rain.
